HYDRAULIC OIL FILTER FILTER ELEMENT

A brief summary of excavators

As the main working equipment of excavator backhoe, the rationality of its structure directly affects the working performance and reliability of the whole machine. Because of its complex and varied working loads, the reliability of the working device is concerned. According to the traditional design method, it is far from satisfying the needs of product development and design to assume several dangerous poses based on experience and check the structural strength through manual calculation. With the increasing requirement of modern excavator design computer aided design method has been widely used in steel structure design and dangerous condition analysis of backhoe working device of hydraulic excavator. Among them, the finite element method has been widely used in the design of construction machinery, its main process is: pre-processing, calculation and result post-processing analysis, the application of finite element in the engineering process has greatly shortened the product development cycle. In the finite element static strength analysis of excavator working device, firstly, the force analysis of each component is carried out, and then the finite element model is set up in the finite element software, including grid division, the application of displacement boundary conditions and force boundary conditions, and finally the finite element result analysis. Due to the variable working conditions of excavator working devices, it is difficult to set the boundary conditions accurately, which leads to certain differences between the finite element analysis results and the actual conditions. However, most of the previous analysis is based on experience in several typical working conditions, respectively to find the relative force of each component state, strength analysis, and the boundary section setting methods are different, so the correctness of the finite element results is still worth discussing. This paper takes the working device of Shanhe Intelligent SWE360S as the research object, differs from the previous analysis, mainly studies the boundary conditions of its strength analysis and the selection of working conditions, and finds the real dangerous section of the working device.